US4552292A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- US4552292A US4552292A US06/440,800 US44080082A US4552292A US 4552292 A US4552292 A US 4552292A US 44080082 A US44080082 A US 44080082A US 4552292 A US4552292 A US 4552292A
- Authority
- US
- United States
- Prior art keywords
- tube
- support sheet
- tube support
- serpentine
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
- F22B37/205—Supporting and spacing arrangements for tubes of a tube bundle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1869—Hot gas water tube boilers not provided for in F22B1/1807 - F22B1/1861
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
- F22B21/22—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight
- F22B21/28—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight bent spirally
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49373—Tube joint and tube plate structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49377—Tube with heat transfer means
- Y10T29/49378—Finned tube
Definitions
- This invention relates, in general, to heat exchangers and methods of constructing heat exchangers; and, in particular, this invention is useful in the field of non-contact heat recovery steam generators.
- Heat recovery steam generators are non-contact type heat exchangers which include fluid carrying tubes disposed in a hot gas path.
- One example of such a device is shown in U.S. Pat. No. 4,262,705 to Skinner et al. assigned to the assignee of the present invention.
- Such an arrangement is sometimes referred to as a tube and plate construction because the fluid carrying tubes are supported by a plate having tube carrying holes formed through the plate.
- Heat recovery steam generators are useful in combined cycle power plants such as that shown in U.S. Pat. No. 4,316,435 to Nagamatsu et al. also assigned to the present assignee. In the Nagamatsu et al.
- the present invention is a non-contact heat exchanger of the type which includes a plurality of serpentine tubes which are hung from several support beams by a number of tube hanger straps which are welded together.
- the tube hanger straps welded together form a tube support sheet section which is later hung from a support beam.
- Several tube support sheet sections are welded together to form a tube support sheet of which there are several spaced apart in the heat exchanger box.
- the serpentine tube is completely formed, welded, and tested prior to its assembly with the tube hanger straps thus permitting bench welding operations and obviating local welding within the confined volume of the heat exchanger box.
- FIG. 1 is an isometric cutaway drawing of a heat exchanger showing several assembled tube support sheets.
- FIG. 2 is a manufacturing sequence drawing including steps 2A through 2D indicating the method of forming a serpentine tube prior to assembly with a tube support sheet section.
- FIG. 3 is a manufacturing sequence drawing including steps 3A through 3C indicating the method and construction of the tubes and tube support sheet sections and modules.
- FIG. 4 is a manufacturing sequence drawing including steps 4A through 4C indicating the method of heat exchanger box assembly.
- This invention relates to non-contact heat exchangers of which one example is a heat recovery steam generator.
- the intent is to describe a device which channels hot gases past heat exchanger tubes which are disposed across the hot gas path or duct.
- the heat recovery steam generator may be comprised of multiple boxes including an economizer, an evaporator and a superheater. These boxes are by no means identical to one another but one representative heat exchanger box 11 is shown in FIG. 1.
- the heat exchanger box is comprised of end walls 13 (only one shown) and sidewalls 15. The entire walled portion of the box is lined with thermal insulation 17.
- the heat exchanger box further includes a plurality of tube support sheets or assembled hanger strap means 19 which provide support for heat exchanger tubes 21 only a sample of which are shown.
- Each tube support sheet is terminated and aligned at each end by upper and lower plate members 23 and 25 respectively.
- the upper plate members are supported from a beam 27 by means of pivotal links 29.
- the beams are then supported by structural members associated with the box sidewalls.
- the tube support sheets are preferably constructed in a honeycomb configuration which allows each serpentine tube row to be staggered relative to adjacent rows on each side. This configuration promotes better heat transfer and gas flow characteristics.
- one preferred embodiment of the present invention includes the support of serpentine tubes.
- Serpentine tubes include a mandrel 31 and fin elements 33.
- the mandrel includes a hollow axial bore 35 which carries the tube side fluid to be heated.
- this portion of finned tubing may be referred to as straight pipe.
- each straight pipe includes at either end a return bend 37 or a stub end 39.
- the serpentine tube is comprised of at least a stub inlet end, a straight pipe, a return bend, a second straight pipe, and a stub outlet end in series flow configuration. More than likely, there will be several straight pipes interconnected by return bends and terminated at opposite ends by stub ends.
- the parts heretofore described are butt welded together to form a serpentine tube. The assembly operations can be traced in accordance with steps 2A through 2D shown in FIG.
- a significant advantage of the present method and apparatus is that the foregoing steps may be carried out away from the confines of the heat exchanger box.
- FIG. 3 shows the formation of a tube module and the combination of the tube support sheet sections and fluid carrying tubes.
- FIG. 3A entitled Operation 1 is a stack and weld operation.
- a pre-assembled serpentine tube 21 is laid upon a hanger strap member 41 and an additional hanger strap member is laid upon the serpentine tube and thereafter is aligned with the first hanger strap member so that convergent parts 43 may be plug welded to one another whereas opposite divergent parts 45 form passageways for the tubes.
- the stacking operation comprises the steps of placing a first preformed serpentine tube 1 onto a first tube support strap and plug welding a second tube support strap to the first tube support strap at convergent parts.
- FIG. 3B shows the stacking and welding operation complete in the formation of a tube module and furthermore shows the upper plate member 23 and the lower plate member 25 welded to each tube support sheet section (only two shown).
- the tube support assembly operation comprises the steps of alternately stacking hanger strap members and serpentine tubes to form a tube support sheet section and module welding upper and lower plates to each tube support sheet section and rotating the tube module for assembly into the heat exchanger box.
- Adjacent tube support sections in the same plane are welded together, to form a tube support sheet, at the upper and lower plate members as indicated by the tabs shown in Figure 1 on the lower plate member.
- the formation of a tube support sheet section and module includes the alternate stacking and welding operation of tube hanger straps and prefabricated serpentine tubes.
- Upper and lower plate members are added to each tube support sheet section.
- the module is rotated and hung from a support beam and adjacent plate members are welded together to secure and maintain a tube support sheet of which there are several.
- FIG. 4 shows the completed fabrication of the heat exchanger box or the box assembly sequence including the assembled tube support sheets and tubes to the box sidewalls 15 through the support beams 27 and pivot links 29, shown in FIGS. 1 and 4A.
- An inlet header 51 and an outlet header 53 are welded to the inlet and outlet stub members as shown in step 4B and finally the box is closed up by means of end wall 13 and prepared for an additional hydrostatic test as seen in step 4C.
- finishing steps to the operation are mounting the tube support sheet and tube modules to the box structure; welding the inlet and outlet headers to the tube stubs and closing the box to contain the tubes, tube support sheets and headers.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Power Steering Mechanism (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Claims (5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/440,800 US4552292A (en) | 1982-11-12 | 1982-11-12 | Heat exchanger |
GB08330018A GB2131153B (en) | 1982-11-12 | 1983-11-10 | Heat exchanger |
JP58211110A JPS59107193A (en) | 1982-11-12 | 1983-11-11 | Heat exchanger |
NL8303878A NL8303878A (en) | 1982-11-12 | 1983-11-11 | HEAT EXCHANGER. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/440,800 US4552292A (en) | 1982-11-12 | 1982-11-12 | Heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US4552292A true US4552292A (en) | 1985-11-12 |
Family
ID=23750232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/440,800 Expired - Fee Related US4552292A (en) | 1982-11-12 | 1982-11-12 | Heat exchanger |
Country Status (4)
Country | Link |
---|---|
US (1) | US4552292A (en) |
JP (1) | JPS59107193A (en) |
GB (1) | GB2131153B (en) |
NL (1) | NL8303878A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007017564A1 (en) * | 2007-04-12 | 2008-10-16 | Wallstein Ingenieur-Gesellschaft Mbh | Device for distancing heat exchanger tubes |
CN103212962A (en) * | 2013-03-29 | 2013-07-24 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of finned tube heat exchanger |
US20160265851A1 (en) * | 2013-11-28 | 2016-09-15 | Flowforce Co., Ltd. | Heat exchanger and method for manufacturing same |
CN109186281A (en) * | 2018-10-26 | 2019-01-11 | 隆华科技集团(洛阳)股份有限公司 | A kind of compound evaporative heat-exchange device with composite frame structure |
US20220364799A1 (en) * | 2020-08-24 | 2022-11-17 | Fuji Electric Co., Ltd. | Finned tube heat exchanger |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61258399A (en) * | 1985-05-11 | 1986-11-15 | Fujitsu Ltd | Semiconductor integrated circuit device |
JPS61292755A (en) * | 1985-06-20 | 1986-12-23 | Fujitsu Ltd | Semiconductor integrated circuit |
WO2015191266A1 (en) * | 2014-06-10 | 2015-12-17 | Siemens Aktiengesellschaft | Modular heat recovery steam generator construction |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1913175A (en) * | 1930-04-04 | 1933-06-06 | Frigidaire Corp | Method of making refrigerating apparatus |
US1955837A (en) * | 1929-01-31 | 1934-04-24 | Frigidaire Corp | Method of making alpha refrigerator element |
US2038912A (en) * | 1930-04-04 | 1936-04-28 | Gen Motors Corp | Refrigerating apparatus |
US2092170A (en) * | 1935-12-31 | 1937-09-07 | Richard W Kritzer | Method of fabricating a finned heat exchanger |
US2256993A (en) * | 1940-07-18 | 1941-09-23 | Linde Air Prod Co | Heat exchange structure |
US2672324A (en) * | 1948-09-29 | 1954-03-16 | Weiss Louis | Tube and plate type heat exchanger and method of making |
US3137638A (en) * | 1959-05-23 | 1964-06-16 | Siemens Ag | Neutronic reactor fuel elements |
US3163208A (en) * | 1961-09-29 | 1964-12-29 | Gen Electric | Brace for finned tubes |
US3267914A (en) * | 1964-10-27 | 1966-08-23 | Foster Wheeler Corp | Economizer support |
US3295598A (en) * | 1965-01-14 | 1967-01-03 | Stanley Knight Corp | Heat exchanger assembly and method of forming same |
US3344855A (en) * | 1964-11-30 | 1967-10-03 | Atomic Energy Authority Uk | Heat exchange assembly including guide vane structure therein |
US3366172A (en) * | 1965-01-21 | 1968-01-30 | Sulzer Ag | Heat exchanger tube support and tube assembly |
US3820594A (en) * | 1972-12-15 | 1974-06-28 | Westinghouse Electric Corp | Tube support system for heat exchanger |
US4048834A (en) * | 1976-04-15 | 1977-09-20 | General Electric Company | Apparatus for forming serpentine heat exchangers |
US4105067A (en) * | 1976-06-16 | 1978-08-08 | Creusot-Loire | Device for locating a layer of tubes in an enclosure |
US4149591A (en) * | 1977-10-11 | 1979-04-17 | Corning Glass Works | Heat exchange modules |
US4236575A (en) * | 1979-09-24 | 1980-12-02 | Ecolaire Incorporated | Tube bundle support plate |
US4253516A (en) * | 1978-06-22 | 1981-03-03 | Westinghouse Electric Corp. | Modular heat exchanger |
US4325171A (en) * | 1979-10-15 | 1982-04-20 | Econo-Therm Energy Systems Corporation | Means and method for sealing heat exchanger walls |
US4344480A (en) * | 1978-03-30 | 1982-08-17 | Ecolaire Incorporated | Support for heat exchange tubes |
US4433721A (en) * | 1980-08-06 | 1984-02-28 | Sulzer Brothers Limited | Spacer grid for supporting rod-shaped members |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB585630A (en) * | 1944-05-15 | 1947-02-14 | Frederick William Timson | Improvements in or relating to heat exchangers |
NL273035A (en) * | 1960-12-29 | |||
US3384165A (en) * | 1966-02-03 | 1968-05-21 | Du Pont | Heat exchanger |
US3545537A (en) * | 1968-12-13 | 1970-12-08 | Combustion Eng | Anti-vibration tube support for vertical steam generator |
SE423151B (en) * | 1977-11-16 | 1982-04-13 | Stal Laval Apparat Ab | HEAD EXCHANGER WITH ROADLINGER BETWEEN BERWEGGAR |
JPS58203303A (en) * | 1982-05-22 | 1983-11-26 | 株式会社東芝 | Waste-heat recovery heat exchanger |
-
1982
- 1982-11-12 US US06/440,800 patent/US4552292A/en not_active Expired - Fee Related
-
1983
- 1983-11-10 GB GB08330018A patent/GB2131153B/en not_active Expired
- 1983-11-11 NL NL8303878A patent/NL8303878A/en not_active Application Discontinuation
- 1983-11-11 JP JP58211110A patent/JPS59107193A/en active Pending
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1955837A (en) * | 1929-01-31 | 1934-04-24 | Frigidaire Corp | Method of making alpha refrigerator element |
US1913175A (en) * | 1930-04-04 | 1933-06-06 | Frigidaire Corp | Method of making refrigerating apparatus |
US2038912A (en) * | 1930-04-04 | 1936-04-28 | Gen Motors Corp | Refrigerating apparatus |
US2092170A (en) * | 1935-12-31 | 1937-09-07 | Richard W Kritzer | Method of fabricating a finned heat exchanger |
US2256993A (en) * | 1940-07-18 | 1941-09-23 | Linde Air Prod Co | Heat exchange structure |
US2672324A (en) * | 1948-09-29 | 1954-03-16 | Weiss Louis | Tube and plate type heat exchanger and method of making |
US3137638A (en) * | 1959-05-23 | 1964-06-16 | Siemens Ag | Neutronic reactor fuel elements |
US3163208A (en) * | 1961-09-29 | 1964-12-29 | Gen Electric | Brace for finned tubes |
US3267914A (en) * | 1964-10-27 | 1966-08-23 | Foster Wheeler Corp | Economizer support |
US3344855A (en) * | 1964-11-30 | 1967-10-03 | Atomic Energy Authority Uk | Heat exchange assembly including guide vane structure therein |
US3295598A (en) * | 1965-01-14 | 1967-01-03 | Stanley Knight Corp | Heat exchanger assembly and method of forming same |
US3366172A (en) * | 1965-01-21 | 1968-01-30 | Sulzer Ag | Heat exchanger tube support and tube assembly |
US3820594A (en) * | 1972-12-15 | 1974-06-28 | Westinghouse Electric Corp | Tube support system for heat exchanger |
US4048834A (en) * | 1976-04-15 | 1977-09-20 | General Electric Company | Apparatus for forming serpentine heat exchangers |
US4105067A (en) * | 1976-06-16 | 1978-08-08 | Creusot-Loire | Device for locating a layer of tubes in an enclosure |
US4149591A (en) * | 1977-10-11 | 1979-04-17 | Corning Glass Works | Heat exchange modules |
US4344480A (en) * | 1978-03-30 | 1982-08-17 | Ecolaire Incorporated | Support for heat exchange tubes |
US4253516A (en) * | 1978-06-22 | 1981-03-03 | Westinghouse Electric Corp. | Modular heat exchanger |
US4236575A (en) * | 1979-09-24 | 1980-12-02 | Ecolaire Incorporated | Tube bundle support plate |
US4325171A (en) * | 1979-10-15 | 1982-04-20 | Econo-Therm Energy Systems Corporation | Means and method for sealing heat exchanger walls |
US4433721A (en) * | 1980-08-06 | 1984-02-28 | Sulzer Brothers Limited | Spacer grid for supporting rod-shaped members |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007017564A1 (en) * | 2007-04-12 | 2008-10-16 | Wallstein Ingenieur-Gesellschaft Mbh | Device for distancing heat exchanger tubes |
CN103212962A (en) * | 2013-03-29 | 2013-07-24 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of finned tube heat exchanger |
US20160265851A1 (en) * | 2013-11-28 | 2016-09-15 | Flowforce Co., Ltd. | Heat exchanger and method for manufacturing same |
CN109186281A (en) * | 2018-10-26 | 2019-01-11 | 隆华科技集团(洛阳)股份有限公司 | A kind of compound evaporative heat-exchange device with composite frame structure |
US20220364799A1 (en) * | 2020-08-24 | 2022-11-17 | Fuji Electric Co., Ltd. | Finned tube heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
GB2131153A (en) | 1984-06-13 |
JPS59107193A (en) | 1984-06-21 |
NL8303878A (en) | 1984-06-01 |
GB2131153B (en) | 1986-04-16 |
GB8330018D0 (en) | 1983-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, A CORP. OF N.Y. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:CUSCINO, RICHARD T.;LEE, LESTER H.;PROHL, MELVIN A.;AND OTHERS;REEL/FRAME:004069/0334;SIGNING DATES FROM 19820927 TO 19821108 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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FPAY | Fee payment |
Year of fee payment: 4 |
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FPAY | Fee payment |
Year of fee payment: 8 |
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REFU | Refund |
Free format text: REFUND OF EXCESS PAYMENTS PROCESSED (ORIGINAL EVENT CODE: R169); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19971112 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |